Currently I’m working on FMECA analysis of HVAC system. System includes temperature controller (in FMD: controller, temperature). FMD-2013 indicates that failure mode distributions for that component are:
In our analysis we assumed that each component is used and maintained correctly. According to that failure mechanism like: [CRACKED]; [BROKEN] (mechanical failures) are not applicable.
Supplier has assumed us that Failure Rate (empirical) of that part is: 14 FPMH.
So, according to our assumptions, FMD and supplier data we calculated that Failure Rate in our case will be:
Failure rate in our case is: 0,484*14 FPMH=6,8 FPMH
Based on information contained in FMD introduction I know that if some Failure Mode is not applicable we should recalculate % (sum of distributions must equal 1) but our case is different (according to assumptions).
Am I right?